Astronomy and Astrophysics Forum

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Join in expert discussion on the topics of Astronomy and astrophysics. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Undergrad Can Someone Help Me Rearrange This Astrophysics Equation?
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Undergrad Is there any formula to calculate the effect gravity has on time
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Undergrad Solar Wind's Effect on other Planets
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Undergrad How long until the Sun becomes a black dwarf?
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Undergrad Exoplanets seem all to have elliptical orbits
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Undergrad Solar Coraona, Photosphere, and temperture
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Undergrad Size Limit of Comets: Understanding Kepler's Laws
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Undergrad Distance to stars from my house using the parallax technique?
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Undergrad What Gases Are Present in Dwarf Planets and Kuiper Belt Objects?
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Undergrad EMwave in space and copper wire.
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Undergrad Star Calculator (Excel spreadsheet)
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Undergrad How to calc absolute magnitudes by comparing to the sun's luminosity
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Undergrad Question about the sun and the earth long long ago.
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Undergrad How Do Tides Reveal the Dynamics of the Earth-Moon System?
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Undergrad Could the shuttle land with Hubble?
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Undergrad Can elevons and rudders effectively steer spacecraft in the vacuum of space?
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Undergrad What are the actual dimensions of the Horsehead nebula?
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Undergrad Is there really a black hole at the center of the Milky Way?
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Undergrad Works of Riemann related to Astronomy that I can understand?
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Undergrad Does Star Evolution Always Lead to Expansion?
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Undergrad Why are the orbits elliptical in shape?
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Undergrad How much lighter do I weigh at noon than I do at dawn?
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Undergrad Peculiar vs. Irregular galaxies? Difference?
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Undergrad How to Calculate Distances and Luminosities of Stars?
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Undergrad Expanding Light: Wave's Radius Increase - Why Not Dim?
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Undergrad How to Calculate Inclination Angle for Galaxies in the Tully-Fischer Relation
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Undergrad Age of the sun+age of previous stars = universe ?
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Undergrad Turbulent Cells and Telescopes: Seeking Help
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Undergrad What Are Good Resources for Understanding the M-sigma Relationship in Astronomy?
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Undergrad What would we need for a warp drive?
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Undergrad Calculating time based on solar position
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Undergrad Is 10 Arc Seconds Accurate Enough for Sending Objects to the Moon?
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Undergrad What Are Orbital Vectors and How Do I Calculate Them?
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Undergrad Wormholes for Dummies Question .
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Undergrad What Happens If a Spaceship Exceeds the Speed of Light?
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Undergrad Calculating Delta-V in Hohmann Transfer Equation
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Undergrad Why is the center of the galaxy located on the elliptic?
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Undergrad Stationary satellite in high latitude
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Undergrad Question about the expansion of the universe
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Undergrad Star Catalogue Question - Stars near the Ecliptic
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Undergrad Deorbiting q, low speed reentry?
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Undergrad How is the Age of the Universe Calculated Despite Light Travel Distance?
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Undergrad How do the s-process and r-process create elements in stars?
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Undergrad Why Does Our Galaxy's Center Look Bright Despite a Black Hole?
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Undergrad Prof. Kaku's approach on why we haven't met intelligent E.T. life.
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Undergrad Calculate distance between stars in a globular cluster?
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Undergrad Could Apophis Change Earth's Future in 2036?
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Undergrad What is the synodic period of Mercury?
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Undergrad Is a Space Station More Cost-Effective than a Moon Base?
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  • Poll Poll
Undergrad Is 34% far or slightly smaller than 100%?
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Undergrad How is the energy transfered back to the Moon
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Undergrad Universe Expansion: Understanding the Role of Geometry in the Expansion of Space
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Undergrad Stellar orbits around the milky way.
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Undergrad Transit Method to find extrasolar planets.
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Undergrad Finite vs Infinite: Does Size Matter in the Universe?
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Undergrad Is a Symmetrical 'X' Planetary Alignment Possible in a Solar System?
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Undergrad Neutron stars and magnetic fields
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Undergrad What is the percentage of heavy element of the sun?
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Undergrad Rail guns for launching projectiles to space
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Undergrad How Can You Capture Star Spectra for Astronomical Analysis?
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Undergrad Is Space Infinite? - What Do You Think?
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Undergrad How was Voyager 2 used to determine the orbits of Uranus and Neptune?
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Undergrad Equation to find the speed of a distant star
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Undergrad Is the Sun's Gravity Enough to Propel Objects to the Corona?
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Undergrad Sir Author Eddington and Einstein's GTR
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Undergrad Why Is a Single Wavelength Used to Calculate Hubble's Diffraction Limit?
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Undergrad What would happen to Earth's orbit if it increased in mass or lost velocity?
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Undergrad Black Holes: Is the Hubble Image Real?
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Undergrad Space in an Atom: What is the Nature of this Space?
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Undergrad Can someone explain curved space time?
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Undergrad Calculating Orbital Velocity for a Satellite Orbiting Earth
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Undergrad What is singularity? [Black Hole ]
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Undergrad Is this the approximate gravity of Mars?
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Undergrad Can Aliens Observe Plato Lecturing in Academia?
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Undergrad Why Do Orbits Take an Elliptical Shape?
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Undergrad What is the magnitude of the magnetic field in solar wind?
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Undergrad How do we tell how far away a gamma burst was?
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Undergrad Why Are Planetary Orbits in Our Solar System Mostly Coplanar?
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Undergrad Question about orbit determination with find_orb
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Undergrad How Do We Determine the Direction of an Interstellar Signal?
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Undergrad At what point, if any, would a spaceshp burn up in space?
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Undergrad Surviving the Sun's Disappearance: The Life Expectancy of Earth's Inhabitants
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Undergrad What Are Simple Unsolved Problems in Astrophysics for Beginners?
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Undergrad Is a Cosmic Dust Storm Heading Our Way?
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Undergrad How is heat transfered in space?
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Undergrad Ciddor equation. this may be wrong forum, but i dont know where this goes.
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Undergrad Calculating Speed of Halley's Comet at Aphelion/Perihelion
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Undergrad What Is the Current Estimated Size of the Universe?
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Undergrad Orbital speed of stars within galaxies?
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Undergrad Can a Close-up Apparatus Capture Distant Objects Like a Telescope?
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Undergrad How many stars in the Solar neighbourhood
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Undergrad Calculating Mass and Density of Planets in Our Solar System
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Undergrad Moon's Inclination To Earth's Equator
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Undergrad Help with Escape Velocity Problem
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Undergrad Can We Measure the Diameter of Stars Using Angular Resolution and Other Methods?
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Undergrad Gravitational pull of a black hole
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Undergrad Rotating transparent object with stars - what was it?
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Undergrad What Is the Stone’s Speed at 96,000 km From Earth?
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Undergrad Dark Matter: Could it be Plasma?
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Undergrad Lunar Geothermal Energy: Is it Usable?
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